QUARTZ active







2 identical 80W amplifier
eliminates time related distortion

Inteligent Vented Port System
Airflow cooled Tweeter
Exponential coupling (Tweeter/Air)
eliminates reflexion
minimizes distortion
controlled dispersion field pattern

Isolates Cabinet from Ground
Anti slip mechanism

HDS Driver
Polyprophylen membrane
Vented Coil System
Extrem low compression
Superior transient response
Perfect coil cooling

Digital "quick delivery" power supply
cycles 2000 times faster
hum canceling
Tight and accurate Low End

Level control
Sensitivity adjustable
-40 to + 10dB

Perception Adaptation control
Corrects Mid Range
Room compensation
Corner/Wall placement Eq


Josef-Drexler-Str. 8
89331 Burgau
Tel: **49-(0)8222-

  KobaltThe EMES QUARTZ is the big version of the KOBALT Nearfield monitor. The second of a new generation 2 way bi-amplified near field Monitor, specially designed to meet the best performance at a reasonable price point.
Well known EMES HR line features are found in the QUARTZ plus added features like:

The BI-Port™ and the ISO-Rails™

The BI-Port™ was specially designed to keep the cabinet dimensions as small as possible, while supporting the High frequency section.
Therefore we integrate the 25mm Neodymium Tweeter In the Center of the BI-Port™ (Bass Reflex System) for two reasons; To aim for an efficient Air cooling of the "little tweeter" by the Woofers Air flow, secondly and most important to generate a "velocity field (ring shape)" around the Tweeter to support it's High frequency dispersion pattern over long distance!(riding on along wave) Result - an unbelievable precise Stereo-Image over distance.
Also the ISO-Rails™ are features which have practical aspects as well as acoustical once!
Most available cabinets have flat sheet surfaces, such speakers have hard times to stick on the location they were placed on, especially when they are pushed hard, manually or by the moving force of the Woofer!
Not such strange things happen to the KOBALTs! The cabinet is standing on the ISO-Rails™ - a special silicon profile - only. So there is no coupling to surface underneath nor is any "slip" behaviour going on, so the low end is always tight at any time!
As always at EMES, matched high quality drivers are chosen, because to us they are the most critical part in a quality Studio Monitor System!
The Low range (59 - 2000Hz) is reproduced by a 17cm polypropylene Membrane HDS-driver. A 25mm high efficiency Neodymium Tweeter located in the BI-Port™ is used from 2 - 20 kHz!
We at EMES always use identical amplifiers, to have the lowest time related distortion possible! Therefore 2 identical build in 80W rms amplifiers which deliver a powerful and optimized output drive a single QUARTZ Monitor. This is one of the many design criteria's to the EMES audio performance.
To adjust the monitor to your personal listening level, a 16 position dip-switch has been added! This allows to control the midrange performance as wel as to adjust the listening level!

We ship the QUARTZ as all other EMES monitors as matched pairs!

HDS driverIsorailsdigital power supplyBi-PortKobalt Responseshaper

QUARTZ active - System  
construction 2 way bass-reflex 
concept One & One Monitor with Wave-guide 
fc responce free field 58- 20.000 Hz +/- 2,5 dB 
fc responce in wall 59 - 20.000 Hz +/- 2 dB 
system low fc responce 57Hz - 3 dB 
max. sensitivity 108 dB 
max. sensitivity long term 105 dB 
harmonic distortion at SPL <100Hz 1,1
harmonic distortion at SPL >100Hz 0,6 % 
Bass driver 1 x 6" polyprophylen 
Midrange driver
Hf driver 25mm Neodymium ferrofluid cooled 
shielded (anti magnetic) no
weight 6,2 Kg 
dimensions w/h/d in mm 210 x 330 x 250 mm 
pair difference +/- 0,5 dB 
QUARTZ active - Electronic  
number of amplifier
power handling rms Lf/Hf
2 x 70 W
power handling peak Lf/Hf
2 x 80 W
connector type
XLR (female) 
input impedance
10 kOhm 
input sensitivity
4 steps, from 0,45 - 4,5V 
X-over fc
2.000 Hz 
low pass filter
40 Hz / - 18dB 
Mid level control
4 steps, from -2 dB - + 2 dB 
distortion at acoustic max. output
signal to noise ration
-106 dB 
kind of power supply
operating voltage
115/230 V +/- 20% 
power consumtion at max. output
160 W 


". . . . . the new reference in the middle class"
". . . . . see review"
". . . . . impressive to listen, . . . high output, . . .good low end"
". . . . . see review"
". . . . . 5.5 points from 6"